When `standalone` is set to true, this action button will only appear in
"standalone PWA" mode (e.g. home-screen mobile apps, or installed PWA on
desktop). Useful to e.g. only show forward and backward buttons. These
forward and backward buttons are now also added to the default action
button config.
Last openen page information is now kept in the datastore and therefore
persistent even across tabs. This seems to also have fixed ther andom
behavior when deleting a page -> you always go back to your last opened
page (before the one you deleted).
Zef Hemel